title: 23Na solid state MAS NMR of sodium halides occluded in zeolites.
abstract: Occlusion of sodium chloride and sodium bromide in zeolitic pores was performed by heating mixtures of the salts with zeolites NaY and NaA under high vacuum conditions. The obtained samples were subjected to various further pretreatments like washing with water and zinc-exchange, and were investigated spectroscopically with the 23Na MAS NMR technique at various Zeeman field strengths. In the case of NaY, the halides are occluded in both types of cages of the faujasite structure. About 90% of the sodalite cages are shown to have incorporated salt which is concluded to be part of [Na4Hal]3+ clusters as in the case of sodalite type materials.
authors.affiliation: Lehrstuhl für Physikalische Chemie II, Universität Dortmund, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Seidel
authors.forename: B
authors.initials: B
authors.lastname: Schimiczek
authors.forename: U
authors.initials: U
authors.lastname: Tracht
authors.forename: B
authors.initials: B
authors.lastname: Boddenberg
mesh_terms: D001965:Bromides / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D012965:Sodium Chloride / Q000737:chemistry*; D017670:Sodium Compounds / Q000737:chemistry*; D012975:Sodium Isotopes; D017641:Zeolites / Q000737:chemistry*
chemical_list: D001965:Bromides; D017670:Sodium Compounds; D012975:Sodium Isotopes; D017641:Zeolites; D012965:Sodium Chloride; C027938:sodium bromide